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<p>&nbsp;</p>

<h1>The GNU General Public License (GPL)</h1>

<h2>Version 2, June 1991</h2>

<p><tt>Copyright (C) 1989, 1991 Free Software Foundation, Inc.<br>
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</tt></p>

<p><tt>Everyone is permitted to copy and distribute verbatim
copies<br>
of this license document, but changing it is not allowed.</tt></p>

<p><strong><tt>Preamble</tt></strong></p>

<p><tt>The licenses for most software are designed to take away
your freedom to share and change it. By contrast, the GNU General
Public License is intended to guarantee your freedom to share and
change free software--to make sure the software is free for all
its users. This General Public License applies to most of the
Free Software Foundation's software and to any other program
whose authors commit to using it. (Some other Free Software
Foundation software is covered by the GNU Library General Public
License instead.) You can apply it to your programs, too.</tt></p>

<p><tt>When we speak of free software, we are referring to
freedom, not price. Our General Public Licenses are designed to
make sure that you have the freedom to distribute copies of free
software (and charge for this service if you wish), that you
receive source code or can get it if you want it, that you can
change the software or use pieces of it in new free programs; and
that you know you can do these things.</tt></p>

<p><tt>To protect your rights, we need to make restrictions that
forbid anyone to deny you these rights or to ask you to surrender
the rights. These restrictions translate to certain
responsibilities for you if you distribute copies of the
software, or if you modify it.</tt></p>

<p><tt>For example, if you distribute copies of such a program,
whether gratis or for a fee, you must give the recipients all the
rights that you have. You must make sure that they, too, receive
or can get the source code. And you must show them these terms so
they know their rights.</tt></p>

<p><tt>We protect your rights with two steps: (1) copyright the
software, and (2) offer you this license which gives you legal
permission to copy, distribute and/or modify the software.</tt></p>

<p><tt>Also, for each author's protection and ours, we want to
make certain that everyone understands that there is no warranty
for this free software. If the software is modified by someone
else and passed on, we want its recipients to know that what they
have is not the original, so that any problems introduced by
others will not reflect on the original authors' reputations.</tt></p>

<p><tt>Finally, any free program is threatened constantly by
software patents. We wish to avoid the danger that redistributors
of a free program will individually obtain patent licenses, in
effect making the program proprietary. To prevent this, we have
made it clear that any patent must be licensed for everyone's
free use or not licensed at all.</tt></p>

<p><tt>The precise terms and conditions for copying, distribution
and modification follow.</tt></p>

<p><strong><tt>TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
MODIFICATION</tt></strong></p>

<p><strong><tt>0</tt></strong><tt>. This License applies to any
program or other work which contains a notice placed by the
copyright holder saying it may be distributed under the terms of
this General Public License. The &quot;Program&quot;, below,
refers to any such program or work, and a &quot;work based on the
Program&quot; means either the Program or any derivative work
under copyright law: that is to say, a work containing the
Program or a portion of it, either verbatim or with modifications
and/or translated into another language. (Hereinafter,
translation is included without limitation in the term
&quot;modification&quot;.) Each licensee is addressed as
&quot;you&quot;.</tt></p>

<p><tt>Activities other than copying, distribution and
modification are not covered by this License; they are outside
its scope. The act of running the Program is not restricted, and
the output from the Program is covered only if its contents
constitute a work based on the Program (independent of having
been made by running the Program). Whether that is true depends
on what the Program does.</tt></p>

<p><strong><tt>1</tt></strong><tt>. You may copy and distribute
verbatim copies of the Program's source code as you receive it,
in any medium, provided that you conspicuously and appropriately
publish on each copy an appropriate copyright notice and
disclaimer of warranty; keep intact all the notices that refer to
this License and to the absence of any warranty; and give any
other recipients of the Program a copy of this License along with
the Program.</tt></p>

<p><tt>You may charge a fee for the physical act of transferring
a copy, and you may at your option offer warranty protection in
exchange for a fee.</tt></p>

<p><strong><tt>2</tt></strong><tt>. You may modify your copy or
copies of the Program or any portion of it, thus forming a work
based on the Program, and copy and distribute such modifications
or work under the terms of Section 1 above, provided that you
also meet all of these conditions:</tt></p>

<blockquote>
    <p><tt>a) You must cause the modified files to carry
    prominent notices stating that you changed the files and the
    date of any change.</tt></p>
    <p><tt>b) You must cause any work that you distribute or
    publish, that in whole or in part contains or is derived from
    the Program or any part thereof, to be licensed as a whole at
    no charge to all third parties under the terms of this
    License.</tt></p>
    <p><tt>c) If the modified program normally reads commands
    interactively when run, you must cause it, when started
    running for such interactive use in the most ordinary way, to
    print or display an announcement including an appropriate
    copyright notice and a notice that there is no warranty (or
    else, saying that you provide a warranty) and that users may
    redistribute the program under these conditions, and telling
    the user how to view a copy of this License. (Exception: if
    the Program itself is interactive but does not normally print
    such an announcement, your work based on the Program is not
    required to print an announcement.)</tt></p>
</blockquote>

<p><tt>These requirements apply to the modified work as a whole.
If identifiable sections of that work are not derived from the
Program, and can be reasonably considered independent and
separate works in themselves, then this License, and its terms,
do not apply to those sections when you distribute them as
separate works. But when you distribute the same sections as part
of a whole which is a work based on the Program, the distribution
of the whole must be on the terms of this License, whose
permissions for other licensees extend to the entire whole, and
thus to each and every part regardless of who wrote it.</tt></p>

<p><tt>Thus, it is not the intent of this section to claim rights
or contest your rights to work written entirely by you; rather,
the intent is to exercise the right to control the distribution
of derivative or collective works based on the Program.</tt></p>

<p><tt>In addition, mere aggregation of another work not based on
the Program with the Program (or with a work based on the
Program) on a volume of a storage or distribution medium does not
bring the other work under the scope of this License.</tt></p>

<p><strong><tt>3</tt></strong><tt>. You may copy and distribute
the Program (or a work based on it, under Section 2) in object
code or executable form under the terms of Sections 1 and 2 above
provided that you also do one of the following:</tt></p>

<blockquote>
    <p><tt>a) Accompany it with the complete corresponding
    machine-readable source code, which must be distributed under
    the terms of Sections 1 and 2 above on a medium customarily
    used for software interchange; or,</tt></p>
    <p><tt>b) Accompany it with a written offer, valid for at
    least three years, to give any third party, for a charge no
    more than your cost of physically performing source
    distribution, a complete machine-readable copy of the
    corresponding source code, to be distributed under the terms
    of Sections 1 and 2 above on a medium customarily used for
    software interchange; or,</tt></p>
    <p><tt>c) Accompany it with the information you received as
    to the offer to distribute corresponding source code. (This
    alternative is allowed only for noncommercial distribution
    and only if you received the program in object code or
    executable form with such an offer, in accord with Subsection
    b above.)</tt></p>
</blockquote>

<p><tt>The source code for a work means the preferred form of the
work for making modifications to it. For an executable work,
complete source code means all the source code for all modules it
contains, plus any associated interface definition files, plus
the scripts used to control compilation and installation of the
executable. However, as a special exception, the source code
distributed need not include anything that is normally
distributed (in either source or binary form) with the major
components (compiler, kernel, and so on) of the operating system
on which the executable runs, unless that component itself
accompanies the executable.</tt></p>

<p><tt>If distribution of executable or object code is made by
offering access to copy from a designated place, then offering
equivalent access to copy the source code from the same place
counts as distribution of the source code, even though third
parties are not compelled to copy the source along with the
object code.</tt></p>

<p><strong><tt>4</tt></strong><tt>. You may not copy, modify,
sublicense, or distribute the Program except as expressly
provided under this License. Any attempt otherwise to copy,
modify, sublicense or distribute the Program is void, and will
automatically terminate your rights under this License. However,
parties who have received copies, or rights, from you under this
License will not have their licenses terminated so long as such
parties remain in full compliance.</tt></p>

<p><strong><tt>5</tt></strong><tt>. You are not required to
accept this License, since you have not signed it. However,
nothing else grants you permission to modify or distribute the
Program or its derivative works. These actions are prohibited by
law if you do not accept this License. Therefore, by modifying or
distributing the Program (or any work based on the Program), you
indicate your acceptance of this License to do so, and all its
terms and conditions for copying, distributing or modifying the
Program or works based on it.</tt></p>

<p><strong><tt>6</tt></strong><tt>. Each time you redistribute
the Program (or any work based on the Program), the recipient
automatically receives a license from the original licensor to
copy, distribute or modify the Program subject to these terms and
conditions. You may not impose any further restrictions on the
recipients' exercise of the rights granted herein. You are not
responsible for enforcing compliance by third parties to this
License.</tt></p>

<p><strong><tt>7</tt></strong><tt>. If, as a consequence of a
court judgment or allegation of patent infringement or for any
other reason (not limited to patent issues), conditions are
imposed on you (whether by court order, agreement or otherwise)
that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under
this License and any other pertinent obligations, then as a
consequence you may not distribute the Program at all. For
example, if a patent license would not permit royalty-free
redistribution of the Program by all those who receive copies
directly or indirectly through you, then the only way you could
satisfy both it and this License would be to refrain entirely
from distribution of the Program.</tt></p>

<p><tt>If any portion of this section is held invalid or
unenforceable under any particular circumstance, the balance of
the section is intended to apply and the section as a whole is
intended to apply in other circumstances.</tt></p>

<p><tt>It is not the purpose of this section to induce you to
infringe any patents or other property right claims or to contest
validity of any such claims; this section has the sole purpose of
protecting the integrity of the free software distribution
system, which is implemented by public license practices. Many
people have made generous contributions to the wide range of
software distributed through that system in reliance on
consistent application of that system; it is up to the
author/donor to decide if he or she is willing to distribute
software through any other system and a licensee cannot impose
that choice.</tt></p>

<p><tt>This section is intended to make thoroughly clear what is
believed to be a consequence of the rest of this License.</tt></p>

<p><strong><tt>8</tt></strong><tt>. If the distribution and/or
use of the Program is restricted in certain countries either by
patents or by copyrighted interfaces, the original copyright
holder who places the Program under this License may add an
explicit geographical distribution limitation excluding those
countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License
incorporates the limitation as if written in the body of this
License.</tt></p>

<p><strong><tt>9</tt></strong><tt>. The Free Software Foundation
may publish revised and/or new versions of the General Public
License from time to time. Such new versions will be similar in
spirit to the present version, but may differ in detail to
address new problems or concerns.</tt></p>

<p><tt>Each version is given a distinguishing version number. If
the Program specifies a version number of this License which
applies to it and &quot;any later version&quot;, you have the
option of following the terms and conditions either of that
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the
Free Software Foundation.</tt></p>

<p><strong><tt>10</tt></strong><tt>. If you wish to incorporate
parts of the Program into other free programs whose distribution
conditions are different, write to the author to ask for
permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we
sometimes make exceptions for this. Our decision will be guided
by the two goals of preserving the free status of all derivatives
of our free software and of promoting the sharing and reuse of
software generally.</tt></p>

<p><strong><tt>NO WARRANTY</tt></strong></p>

<p><strong><tt>11</tt></strong><tt>. BECAUSE THE PROGRAM IS
LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO
THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM &quot;AS IS&quot; WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR
OR CORRECTION.</tt></p>

<p><strong><tt>12</tt></strong><tt>. IN NO EVENT UNLESS REQUIRED
BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT
HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE
PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM
(INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN
IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES.</tt></p>

<p><tt>END OF TERMS AND CONDITIONS</tt></p>
<tt><!-- START OF 'HOW TO APPLY' SECTION --></tt>

<p><strong><tt>How to Apply These Terms to Your New Programs</tt></strong></p>

<p><tt>If you develop a new program, and you want it to be of the
greatest possible use to the public, the best way to achieve this
is to make it free software which everyone can redistribute and
change under these terms.</tt></p>

<p><tt>To do so, attach the following notices to the program. It
is safest to attach them to the start of each source file to most
effectively convey the exclusion of warranty; and each file
should have at least the &quot;copyright&quot; line and a pointer
to where the full notice is found.</tt></p>

<blockquote>
    <p><tt>One line to give the program's name and a brief idea
    of what it does.<br>
    Copyright (C) &lt;year&gt; &lt;name of author&gt;</tt></p>
    <p><tt>This program is free software; you can redistribute it
    and/or modify it under the terms of the GNU General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later
    version.</tt></p>
    <p><tt>This program is distributed in the hope that it will
    be useful, but WITHOUT ANY WARRANTY; without even the implied
    warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
    PURPOSE. See the GNU General Public License for more details.</tt></p>
    <p><tt>You should have received a copy of the GNU General
    Public License along with this program; if not, write to the
    Free Software Foundation, Inc., 59 Temple Place, Suite 330,
    Boston, MA 02111-1307 USA</tt></p>
</blockquote>

<p><tt>Also add information on how to contact you by electronic
and paper mail.</tt></p>

<p><tt>If the program is interactive, make it output a short
notice like this when it starts in an interactive mode:</tt></p>

<blockquote>
    <p><tt>Gnomovision version 69, Copyright (C) year name of
    author Gnomovision comes with ABSOLUTELY NO WARRANTY; for
    details type `show w'. This is free software, and you are
    welcome to redistribute it under certain conditions; type
    `show c' for details.</tt></p>
</blockquote>

<p><tt>The hypothetical commands `show w' and `show c' should
show the appropriate parts of the General Public License. Of
course, the commands you use may be called something other than
`show w' and `show c'; they could even be mouse-clicks or menu
items--whatever suits your program.</tt></p>

<p><tt>You should also get your employer (if you work as a
programmer) or your school, if any, to sign a &quot;copyright
disclaimer&quot; for the program, if necessary. Here is a sample;
alter the names:</tt></p>

<blockquote>
    <p><tt>Yoyodyne, Inc., hereby disclaims all copyright
    interest in the program `Gnomovision' (which makes passes at
    compilers) written by James Hacker.</tt></p>
    <p><tt>signature of Ty Coon, 1 April 1989<br>
    Ty Coon, President of Vice</tt></p>
</blockquote>

<p><tt>This General Public License does not permit incorporating
your program into proprietary programs. If your program is a
subroutine library, you may consider it more useful to permit
linking proprietary applications with the library. If this is
what you want to do, use the GNU Library General Public License
instead of this License.</tt></p>


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